Exhaust Sizing?

[Doug C.]

Ok, just getting an idea of what size exhaust to get. I'm planning on running a downpipe back system. I'll keep a muffler (at least at first) with the cat removed. I will not be racing this truck. This is my daily and my racecar tow vehicle but I figure there is no reason to leave it alone. My main question is what size pipe do you guys think I should go with. The truck is basically stock right this minute but I'll be adding a ton of stuff in the next few months. The current plan is an AFE Stage II intake, SCT Livewire, exhaust(obviously), and later turbo, injector, headstuds (unless I earn them sooner!).

The truck pulls a little trailer right now but we will be upgrading to something in the 48-52 foot car hauler with living quarters. I am new to the Powerstroke thing. I work on everything diesel in the motorhome world but have yet to mess with the world of little diesels. Everything smaller than 5" in diameter looks little to me.

So, now after reading my novel----whatcha think?

[DKR]

I would with the the "standard" 3.5 DP, cat delete, performance muffler (I have MBRP) and 4" pipes to 5" tips. Single or dual is upto you. I have the cat out and the muffler in to duals. I LOVE IT!! Good sound, but not enough to p!$$ off the neighbors.

[Evil Eye]

4" should be fine for what you're doing, but the 5" sounds really nice...

[Raul@Stealth Automotive]

my vote is for a 4" straight pipe...

[westcoaststrokin]

4" Straight pipe vote also.

[Doug C.]

That's what I wanted to know. I've been looking at the 4 and 5 inch models and wasn't sure which to go with. I love the massive 5" look but if I don't really need it then I'm not sure I want it.

Ok, now that we have a few suggestions on size--what about brand? I want something that fits great. I'm a mechanic by trade so installation is never a problem. If I didn't have to fabricate something during an upgrade I'm not sure I'd know what to do with myself.

[Raul@Stealth Automotive]

the MBRP is by far one of the greatest fits... now would you need SS or AL? magnaflow is also very good but a lil bit more expensive

[farmboysdiesel]

FBD Budget kit will give the MBRP stuff a run for it's money on fit and finish!! Always look to get the most for your money - 4in turbo back with a free flow muffler will sound much better on top end.

[loudnsmoky620]

4 in straight pipe my vote also